Liquid dispenser



Feb. 17,193]. 'r. .11 c. SCHIRRMACHER 1,792,934

LIQUID DISPENSER v Filed July 27, 1929 I A TTORNE YS.

' 40 ceeds.

Patented Feb. 17, 1931' PATENT OFFICE THEODOR 3'. G. SGHIRBIIAGHER, OI OAKLAND, CALIFORNIA mourn msrnivsna Application filed July 27,1929. Serial No. 381,541.

The present invention relates to improvements in liquid dispensers, and has particular reference to gasoline dispensers adapted to be used service stations and garages. The principal object of the invention is to pro vide a measuring device that is to beused in dispensing gasoline or, other combustible fluids into motor vehicle supply tanks or containers used in combination with engines adapted to use combustible fluids. The dispenser I provide is to be of the air pressure type and to be so constructed as toreduce to a greater degree the possibility of explosion in using such dangerous fluids.

Another object is to provide a novel combination of cooperating elements enabling one to place the container beneath the surface of the ground and eflicientlyoperate the dispenser by extended operating means.

further object is to provide a gasolinedispenser having ,in combination an exhaust mechanism for catching vapors and gases risin from the container into which the gasoline is dispensed and discharging them at some distant place so thatthere is no possibility of the gases or vapors being ignited.

It is particularly proposed to use for this purpose a container that may be made of metal or other suitable nonbreakable material from which gasoline may be dispensed by air pressure bearing on the surface of the gasoline in said container, while a gauge surmounts the container and'a float riding on the fluid has an indicator associated therewith which allows the lowering of the float to be observed so thatthe purchaser of the gasoline can watch .the amount measured out.

Other objects and advantages of my invention will appear as thespecification pro- The preferred form of my invention. is

illustrated in the accompanying drawing, in

Figure 3, a horizontal sectiontaken-along the line 33 of Figure 1;

Figure 4, a'detail view of the upper end same time out the latter off from the pressure of the gauge assembly taken along the line 4-4 of Figure 1, and 1 Figure 5, a side view showing a three-way valve as seen from line 5--5 of Figure 1.

In its preferred form, 111 device comprises a cylindrical container 1, w ich is to be placed at a desired distanceunder the surface of the ground 1', and held in position by a suitable stand 2.

An intake pipe 3, provided with a check valve 4 extending through the top 5 of the container, may be connected to a gasoline supply source. On the side of the container, an overflow pipe 6 is connected and is so disposed as to catch any gasoline that flows over 05 the guard 7. The'overflowpipeis connected to a return pipe 8; the latter conduit carries all the overflow to the general reserve tank. Between the overflow pipe and the returnpipe, I place. a valve 9, which can be operated by ,a Wheel 10. A ipe 11, extending into thev container, is a ed to the top 5. This pipe carries a. three-way valve 14:, to which a pressure-carrying conduit 12 is connected for carrying air pressure into the tank. A revolvable handle 15 is attached to the valve for operating the same. Above this valve is' provided a vent pipe 16. for carrfying ofi' gas fumes and to relieve the pressure rom the tank when it is necessary. A stop member 17 for the operating handle, is mounted on-a support 18, the latter being held in position by the pipe 11. The member 17 is revolvable on the pin 19, so that it may be swung from its operative position as a stop when its function is not desired.

From Figure 5 it can be seen that=-when the handle is in an uprightpositio'n, air pressure enters the container 1. When the handle is turned through a quarter of a turn, the opening to the conduit 12 is closed while communication is established between the tank and the atmosphere. Should it be desired to keep pressure in the tank, but at the supply it is necessary to turn the handle-onl one-eighth of a complete turn. A stop 1; is swung into operative position to'prevent further movement of the handle after making one-eighth of-a' turn. The stop is swung out of position when the handle is swung through a quarter of a turn.

A discharge pipe 20 for the gasoline is'carried by a member 21.

The latter member is provided in order to extend the operating mechanism above the surface of the ground andalso to provide a way in which the valve 22, which is connected to the discharge pipe, may be raised out of the container. In order to perform this operation, the plate 23 need only to be freed from the member 21 by removal of the stud bolts 23'. At the bottom of the valve 22, I provide a lever 22' pivoted at 24, which is attached to the valve stopper. At one end of the lever, a rod 24' is connected. This rod is extended through the opening 25 through the pipe 21 and the plate 23. At this point,

' of the rod 24' and an alined rod leaving a gap 31 between the two rods. The rod 30 is connected to a valve 32, similar to the one disposed in the bottom of the container. On

this member 30, an adjustin means 30' is provided, which allows the width of the gap 31 between the two rods 24' and 30 to be adjusted.

The valve 32 in its normal position is held open by a spring 33, having one end fixed to a clamp'34 and the other toan arm 35 extending from the rod 30.

Two clamping members 37 are fixed to the pipe 20 and one of them has the plate 38 pivoted thereto, which latter has a handle 36 extending therefrom by means of whichthe plate may be operated. The latter is connected through a pin 39 and a vertical member 35 with the arm 35, so that when the handle is swung upward, the rod 30 is depressed for closing the valve 32.

As the rod descends, it strikes the rod 24' and opens the valve 22 in the bottom of the tank.

It will be seen from this construction that normally the upper valve 32 is held 0 en by the spring 33 and the bottom valve 22 is held closed by the spring 27. The pipe 20 is normally filled with gasoline. When the handle 36 is pressed upward, the rod 30 is forced down for closing the valve 32, so that no gasoline may escape therethrough during the dispensing operation. During the latter part of this movement, the rod 30 operates the rod 24 and thereby opens the valve 22. Gasoline is now discharged until the operator releases the handle 36, which causes both springs to actuate their respective valves for closing the bottom valve and o ening the top valve. But it should be note that the rod 24' has a,

shorter distance to travel in returning to normal than the rod 30 and that therefore the bottom valve closes slightly before the to valve opens so that the pressure is taken 0 in the T coupling 41 or the discharge pipe 42.

It is to this latter member that I connect a discharge nozzle 43. 1

It is also to be noted that in order to use my method of discharging gasoline and at the sametime insure an exact measure, a check valve 40 is provided, which operates to allow no return of gasoline to the container after it has been forced up past the stopper of the valve. It should also be noted that there are no valves between the container 1 and the storage tank through which it might be possible for a leakage of gasoline.

To minimize the possibilities'of explosion, the discharge nozzle 43 has a pipe 44 disposed therein to carry off the gas vapors and fumes of the automobile tank orv any container that the gasoline is dispensed into. The pipe 44 is connected to the vent pipe 16 by the T coupling 45.

A gauge 46 that is operated by a float 47 is disposed in a desired position above the container 1. In Figure 4, I have pictured my novel construction for making the gauge a nonleakable one. In view of the fact that the expansion and contraction of glass and metal are different, it is necessary to provide a yielding means to hold the washer 47' tight against the glass 48. I obtain this ob]ect by providing a bolt 49 having an enlarged portion 50 to engage with a spring 51. metal washer 52 engages with the other end of the spring. Hence, it can be readilyseen that by adjusting the bolt 49 and making it fast by a lock nut 53 any desired pressure may be obtained and .at the same time the expansion and contraction of the glass and metal dp es not cause the air to leak by the washer 4 While I have shown only the preferred form of'my invention, I wish to have it understood that various changes or modifications may be made within the scope of the claims hereto attached without departlng from the spirit of the invention.

I claim:

1. In a liquid dispensing device of the character described, a tank having an outlet conduit extending thereinto, pressure means for discharging liquid therethrough, a valve. for the conduit within the tank, a second valve for the conduit outside of the tank for venting the conduit and a common control for both valves.

2. In a liquid dispensing device of the character described, a tank having an outlet conduit extending thereinto, pressure means for discharging liquid therethrough, a valve for the conduit within the tank, a second valve for the conduit outside of the tank for venting the conduit and a common control for both valves, including means for opening one of the valves after the other.

3. In a liquid dispensing device of the character described, a tank having an outlet con-" duit extending thereinto, pressure means for m discharging li uid therethrough, a valve for the conduit within the tank, a second valve for the conduit outside of the tank for venting the conduit, a common control for both valves comprising two alined and normally 5 spaced actuating rods for the two valves and means for operating one of the rods for first actuatingits valve and then the other rod which actuated the second valve.

4. In a liquid dispensing device of the character described, a tank having an outlet conduit and pressure means for discharging therethrou h and a gauge for said tank comprising a tu e risingfrom the tank and slotted through a section t ereof, a glass tube within said section, a float in the tank having a rod extendin into the tube with a pointer movable in t e lass tube for showing the level of the li ui within the tank, a removable over for t e glass tube and spring means for seating the same.

THEODOR .I. C. SCHIRRMACHIIR.

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